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RAND_load_file.3
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.\" Automatically generated by Pod::Man v1.37, Pod::Parser v1.32 .\" .\" Standard preamble: .\" ======================================================================== .de Sh \" Subsection heading .br .if t .Sp .ne 5 .PP \fB\\$1\fR .PP .. .de Sp \" Vertical space (when we can't use .PP) .if t .sp .5v .if n .sp .. .de Vb \" Begin verbatim text .ft CW .nf .ne \\$1 .. .de Ve \" End verbatim text .ft R .fi .. .\" Set up some character translations and predefined strings. \*(-- will .\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left .\" double quote, and \*(R" will give a right double quote. | will give a .\" real vertical bar. \*(C+ will give a nicer C++. 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The seed file is \f(CW$RANDFILE\fR if that environment variable is set, \f(CW$HOME\fR/.rnd otherwise. If \f(CW$HOME\fR is not set either, or \fBnum\fR is too small for the path name, an error occurs. .PP \&\fIRAND_load_file()\fR reads a number of bytes from file \fBfilename\fR and adds them to the \s-1PRNG\s0. If \fBmax_bytes\fR is non\-negative, up to to \fBmax_bytes\fR are read; starting with OpenSSL 0.9.5, if \fBmax_bytes\fR is \-1, the complete file is read. .PP \&\fIRAND_write_file()\fR writes a number of random bytes (currently 1024) to file \fBfilename\fR which can be used to initialize the \s-1PRNG\s0 by calling \&\fIRAND_load_file()\fR in a later session. .SH "RETURN VALUES" .IX Header "RETURN VALUES" \&\fIRAND_load_file()\fR returns the number of bytes read. .PP \&\fIRAND_write_file()\fR returns the number of bytes written, and \-1 if the bytes written were generated without appropriate seed. .PP \&\fIRAND_file_name()\fR returns a pointer to \fBbuf\fR on success, and \s-1NULL\s0 on error. .SH "SEE ALSO" .IX Header "SEE ALSO" \&\fIrand\fR\|(3), \fIRAND_add\fR\|(3), \fIRAND_cleanup\fR\|(3) .SH "HISTORY" .IX Header "HISTORY" \&\fIRAND_load_file()\fR, \fIRAND_write_file()\fR and \fIRAND_file_name()\fR are available in all versions of SSLeay and OpenSSL.